What are the built-in functions for arrays in php

The built-in functions of arrays in php are: 1. array_unique(); 2. array_merge(); 3. array_push(); 4. array_pop(); 5. array_shift(); 6. array_unshift(); 7. array_flip(); 8. array_keys(); 9. array_values(); 10. array_slice(), etc.

The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.

PHP is a popular scripting language used for developing dynamic web pages and applications. It provides a rich set of built-in functions for working with various data types, including arrays. Array is a data structure that stores multiple values ​​and is widely used in PHP. This article will introduce the commonly used array-related built-in functions in PHP.

1. array_unique()

The array_unique() function is used to remove duplicate values ​​from an array and return a new array. It retains the first occurrence of the value and removes subsequent occurrences of the value from the array.

2. array_merge()

The array_merge() function is used to merge two or more arrays and return the merged result. The merged array contains all elements from the source arrays.

3. array_push()

The array_push() function is used to add one or more elements to the end of the array. It returns the length of the new array.

4. array_pop()

The array_pop() function is used to remove an element from the end of the array and return the removed element. This function modifies the original array.

5. array_shift()

The array_shift() function is used to remove an element from the beginning of the array and return the removed element. This function modifies the original array.

6. array_unshift()

The array_unshift() function is used to add one or more elements to the beginning of the array. It returns the length of the new array.

7. array_flip()

The array_flip() function is used to exchange keys and values ​​in the array. Keys will become values ​​and values ​​will become keys. If there are duplicate values, subsequent keys will overwrite previous values.

8. array_keys()

The array_keys() function is used to return all the key names in the array. It can optionally return all keys, or only keys with specific values.

9. array_values()

array_values() function is used to return all the values ​​in the array. It resets the array keys and returns a new array containing all values.

10. array_slice()

The array_slice() function is used to return a segment of elements of a specified length from an array and save it in a new array.

11. array_splice()

array_splice() function is used to replace part of an array with another array or value and returns the replaced elements. new array.

12. array_search()

The array_search() function is used to find the specified value in the array and return its corresponding key name. If the value does not exist, the function returns false.

13. array_reverse()

The array_reverse() function is used to reverse the order of elements in an array and return a new array.

14. array_sum()

The array_sum() function is used to return the sum of all values ​​in the array.

15. count()

The count() function is used to return the number of elements in the array.

These are just examples of some of the built-in functions in PHP that handle arrays. Mastering these functions will enable you to work more efficiently with array data types in PHP. Of course, there are other built-in functions for sorting, filtering, and manipulating arrays. Becoming familiar with these functions will help you better develop and maintain PHP applications.

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